Hello,
We have a 3 member C3850 Stack that we use Comcast's ENS to switch across that service to all of our other branches. They are all local essentially with the service. We are making a big push in IT to have more monitoring and getting software to help us with that. One of the things that I have noticed is on the stack we are getting output errors, but not input errors. We are getting alerts for 1.3% error rates in our monitoring software. Is this normal? It is a 500Mbps symmetrical connection. Here is the output of the interface command:
GigabitEthernet3/0/38 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 00f8.2c59.65da (bia 00f8.2c59.65da)
Description: Fiber Link COMCAST ENS
Internet address is 10.255.255.1/24
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 2/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1121321193
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1716000 bits/sec, 900 packets/sec
5 minute output rate 8735000 bits/sec, 1212 packets/sec
18544867921 packets input, 13816205244581 bytes, 0 no buffer
Received 65037065 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 59267112 multicast, 0 pause input
0 input packets with dribble condition detected
19655302012 packets output, 16800849983042 bytes, 0 underruns
1121321193 output errors, 0 collisions, 3 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outAlso, here is the config on the port:
interface GigabitEthernet3/0/38
description Fiber Link COMCAST ENS
no switchport
ip flow monitor Netflow-to-Orion input
ip flow monitor NFAOUTmonitor output
ip address 10.255.255.1 255.255.255.0
service-policy input SHAPE
service-policy output SHAPE
I recently create that SHAPE policy to see if I could help rate limit in case we were running over our allotment from the ISP here is that policy:
policy-map SHAPE
class class-default
police 480000000
Is this just much to do about nothing? Or is this something that I need to be concerned about?
